class Foo:
    def find(self):
        print("我是绑定对象的方法")

if __name__ == '__main__':
    # print(Foo) # <class '__main__.Foo'>
    obj = Foo()
    print(obj) # <__main__.Foo object at 0x000002935EB40220>
    obj.find() # 我是绑定对象的方法
    print(type(obj)) # <class '__main__.Foo'>
    # print(type("111")) # <class 'str'>
    print(str)
     # isdigit ：判断字符串是数字的
    """list1 = ['1','a','2']
    new_list = [i for i in list1 if i.isdigit()]
    print(new_list)"""
    """name = str("longzai")
    print(name)
    print(type(name)) # <class 'str'>"""


